MalwareAnalysisForHedgehogs, Principal Malware Researcher at GDATA, he/him 🦔🌈🏳️‍⚧️

International
Joined May 2014
Karsten Hahn retweeted
Interesting malware signed “Guangzhou Guoying Communication Technology Co., Ltd.” and now revoked. Functional PDF editor with backdoor. My report has 3 C2, but have seen more: rogueauthority.org/quartzlin…
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If you have purchased a ThinkNode M9 LoRA device from @Elecrow1/@ELECROW_JP, be aware the internally-mounted MicroSD card is infected: elecrow.com/Thinknode-M9-Sec…
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Karsten Hahn retweeted
We are pleased to release tmp.0ut 5 Volume! Get your viruses, rootkits, strange ELFs, weird machines, tiny files, cool art, and phresh beats here!! tmpout.sh/5/
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Karsten Hahn retweeted
When RE’ing #malware with LLMs, have the LLM also write helper scripts (string/payload decrypters and config extractors) and run these manually on the malware binaries. These make it much easier to validate the LLM's RE quickly and can help expose hallucinations.
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Karsten Hahn retweeted
Together with @bzvr_, @2igosha and Anton Kargin, we identified that the DAEMON Tools software has been compromised in a complex supply chain attack since April 8. We see thousands of infections across 100+ countries. If you use DAEMON Tools, run a malware scan immediately! [1/7]
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Karsten Hahn retweeted
Malware delivery site https[:]//www-rarlab[.]com - WinRAR app.any.run/tasks/aabc0c21-3…
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Karsten Hahn retweeted
Mr. Titus Tech is correct. cpuid-dot-com is indeed delivering malware right now. As I began poking this with I stick I discovered this is not your typical run-of-the-mill malware. This malware is deeply trojanized, distributes from a compromised domain (cpuid-dot-com), performs file masquerading, is multi-staged, operates (almost) entirely in-memory, and uses some interesting methods to evade EDRs and/or AVs such as proxying NTDLL functionality from a .NET assembly. The C2 domain present in one of the binaries is a clear IoC. This is the same Threat Group who was masquerading FileZilla in early March, 2026. They've been busy.
HWInfo and CPU-Z both compromised. Millions about to be PWNED! CPU Z: hybrid-analysis.com/sample/e… HW Monitor: hybrid-analysis.com/sample/4…
Readers added context they thought people might want to know
The post mentions HWInfo, but the link is for HWMonitor. These are different tools from different developers. HWInfo is unaffected. CPU-Z and HWMonitor from cpuid.com are compromised with malware. igorslab.de/en/warning-cpu… reddit.com/r/pcmasterrace… hwinfo.com/forum/threads/…
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Karsten Hahn retweeted
The recording of my first Binary Cartography webinar is now public: Agentic Reverse Engineering: How AI Agents Are Changing Binary Analysis Topics: keygenning, cracking & anti-tamper removal Recording: youtube.com/watch?v=DZcDaXTv… Slides/code/samples: github.com/mrphrazer/binary-…
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Karsten Hahn retweeted
Today I’m launching Threat Hunting Labs. Over the years I’ve analyzed many real-world intrusions. One thing became obvious: most training platforms don’t resemble how investigations actually happen. So I built something different. Threat Hunting Labs focuses on investigation-driven learning using real telemetry and structured investigative paths. If you want to get better at investigating breaches, you should practice investigating breaches. More details here: threathuntinglabs.com/blog/i…
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Karsten Hahn retweeted
I am genuinely impressed by mainstream media outlets ability to find absolute nobodies in cybersecurity. It's remarkable. I am often left speechless. There has been dozens occasions, especially as of recent, where some media outlet will be like, "Today as a special guest is world-renowned cybersecurity expert and ethical hacker Joe McCyberSecurity". I'm like, who the fuck is Joe McCybersecurity? I've been doing cybersecurity and malware stuff for a long time and I've never once seen or heard of Joe McCybersecurity. If he is world-renowned, I would THINK I would have seen them or heard of them. The camera then pans over to Joe McCybersecurity and it is the most generic cookie cutter white dude in a cheap suit and the tag below him will say something like, "Joe McCybersecurity, Ethical Hacker, CEO of Cybersecurity McJoe Industries" I'm like, "Cybersecurity McJoe Industries? What the fuck is that?". I look it up and it's a generic WordPress website hosted on GoDaddy with an expired SSL cert. Joe McCybersecurity then babbles incomprehensible nonsense for about 60 seconds until the TV host goes "woaw" and it cuts to a commercial. Absolute cinema.
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Karsten Hahn retweeted
🗞️ Hunting Malicious Mining Pools: Pivoting Through Crypto Mining Infrastructure This blog post aims to demonstrate how we can correlate a small cluster of IOCs to identify a malicious mining pool associated with the Tangerine Turkey operation. Check it out: theshadowslights.com/posts/t… CC: @johnk3r @_eremit4 @moval0x1 @akaclandestine @MichalKoczwara @1ZRR4H @struppigel
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Karsten Hahn retweeted
APT36 has pivoted from off-the-shelf malware to "vibeware", an AI-driven development model that produces a high-volume, mediocre mass of implants. Using niche languages like Nim, Zig, and Crystal, the actor seeks to evade standard detection engines while leveraging trusted cloud services, including Slack, Discord, Supabase, and Google Sheets, for command and control. #AISecurity bitdefender.com/en-us/blog/b…
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Karsten Hahn retweeted
the watchers: how openai, the US government, and persona have been secretly running an identity surveillance system since nov 2023. vmfunc.re/blog/persona researched by @vmfunc, @MDLcsgo, @DziurwaF
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Karsten Hahn retweeted
Thanks to the proofpoint team for highlighting "TrustConnect Software PTY LTD". The actor got the cert hoping to look like a legitimate RMM—but in collaboration with Proofpoint—we didn't let them maintain the illusion. See Proofpoint's blog for all the details.
Would you run AdobeReader.exe from a days-old company called "TrustConnect Software PTY LTD" just because they managed to purchase an Extended Validation certificate? New blog out together with @proofpoint @threatinsight proofpoint.com/us/blog/threa…
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Karsten Hahn retweeted
Fake RVTools (#SmokedHam) pushed on malicious sponsored SEO, signed "Wuhan Shuoxi Technology Co., Ltd." (Certum issued) cbbe98e1b36eb68a7afe534c21055f9cc793c2a6a7ca63256d273020a096f7a7 rvtoolspro[.]info rvtoolit[.]com download: app-cdn-software-gza4gebuf3cqd8h6.z03.azurefd[.]net/RVTools4.7.1-2?q=RVTools
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Karsten Hahn retweeted
Today we have made the heavy decision to shutdown MalShare in response to losing our hosting provider. We do not have an ETA of when we will be back online.
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Karsten Hahn retweeted
Thanks @struppigel for developing Samplepedia Platform. Here is my latest analysis as a contribution to this incredible repository. It is a privilege to give back to a community that consistently empowers malware researchers worldwide. kienmanowar.wordpress.com/20…
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